Broad spectral photocurrent enhancement in Au-decorated CdSe nanowires

Ritun Chakraborty; Fanny Greullet; Chandramohan George; Dmitry Baranov; Enzo M. Di Fabrizio; Roman Krahne

doi:10.1039/c3nr00752a

Broad spectral photocurrent enhancement in Au-decorated CdSe nanowires

Ritun Chakraborty, Fanny Greullet, Chandramohan George, Dmitry Baranov, Enzo M. Di Fabrizio, Roman Krahne

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Metal-semiconductor hybrid nanostructures promise improved photoconductive performance due to plasmonic properties of the metal portions and intrinsic electric fields at the metal-semiconductor interface that possibly enhance charge separation. Here we report gold decorated CdSe nanowires as a novel functional material and investigate the influence of gold decoration on the lateral facets on the photoconductive properties. Gold decorated nanowires show typically an at least ten-fold higher photocurrent as compared to their bare counterparts. Interestingly, the photocurrent enhancement is wavelength independent, although the plasmon resonance related to the gold particles appears in the absorption spectra. Our experiments show that light scattering and Schottky fields associated with the metal-semiconductor interface are at the origin of the photocurrent enhancement. © 2013 The Royal Society of Chemistry.

Original language	English (US)
Pages (from-to)	5334
Journal	Nanoscale
Volume	5
Issue number	12
DOIs	https://doi.org/10.1039/c3nr00752a
State	Published - 2013

ASJC Scopus subject areas

General Materials Science

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10.1039/c3nr00752a

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@article{2e42eb6a5330496992cdb4702f8a2e4a,

title = "Broad spectral photocurrent enhancement in Au-decorated CdSe nanowires",

abstract = "Metal-semiconductor hybrid nanostructures promise improved photoconductive performance due to plasmonic properties of the metal portions and intrinsic electric fields at the metal-semiconductor interface that possibly enhance charge separation. Here we report gold decorated CdSe nanowires as a novel functional material and investigate the influence of gold decoration on the lateral facets on the photoconductive properties. Gold decorated nanowires show typically an at least ten-fold higher photocurrent as compared to their bare counterparts. Interestingly, the photocurrent enhancement is wavelength independent, although the plasmon resonance related to the gold particles appears in the absorption spectra. Our experiments show that light scattering and Schottky fields associated with the metal-semiconductor interface are at the origin of the photocurrent enhancement. {\textcopyright} 2013 The Royal Society of Chemistry.",

author = "Ritun Chakraborty and Fanny Greullet and Chandramohan George and Dmitry Baranov and {Di Fabrizio}, {Enzo M.} and Roman Krahne",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The SPCM measurements were performed using LABVIEW so. ware developed by Dr. Stefan Kudera. The work was supported by the European Commissions Seventh Framework Program via the NANOANTENNA project (Contract Number: F5-2009 241818).",

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doi = "10.1039/c3nr00752a",

language = "English (US)",

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journal = "Nanoscale",

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T1 - Broad spectral photocurrent enhancement in Au-decorated CdSe nanowires

AU - Chakraborty, Ritun

AU - Greullet, Fanny

AU - George, Chandramohan

AU - Baranov, Dmitry

AU - Di Fabrizio, Enzo M.

AU - Krahne, Roman

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The SPCM measurements were performed using LABVIEW so. ware developed by Dr. Stefan Kudera. The work was supported by the European Commissions Seventh Framework Program via the NANOANTENNA project (Contract Number: F5-2009 241818).

PY - 2013

Y1 - 2013

N2 - Metal-semiconductor hybrid nanostructures promise improved photoconductive performance due to plasmonic properties of the metal portions and intrinsic electric fields at the metal-semiconductor interface that possibly enhance charge separation. Here we report gold decorated CdSe nanowires as a novel functional material and investigate the influence of gold decoration on the lateral facets on the photoconductive properties. Gold decorated nanowires show typically an at least ten-fold higher photocurrent as compared to their bare counterparts. Interestingly, the photocurrent enhancement is wavelength independent, although the plasmon resonance related to the gold particles appears in the absorption spectra. Our experiments show that light scattering and Schottky fields associated with the metal-semiconductor interface are at the origin of the photocurrent enhancement. © 2013 The Royal Society of Chemistry.

AB - Metal-semiconductor hybrid nanostructures promise improved photoconductive performance due to plasmonic properties of the metal portions and intrinsic electric fields at the metal-semiconductor interface that possibly enhance charge separation. Here we report gold decorated CdSe nanowires as a novel functional material and investigate the influence of gold decoration on the lateral facets on the photoconductive properties. Gold decorated nanowires show typically an at least ten-fold higher photocurrent as compared to their bare counterparts. Interestingly, the photocurrent enhancement is wavelength independent, although the plasmon resonance related to the gold particles appears in the absorption spectra. Our experiments show that light scattering and Schottky fields associated with the metal-semiconductor interface are at the origin of the photocurrent enhancement. © 2013 The Royal Society of Chemistry.

UR - http://hdl.handle.net/10754/562509

UR - http://xlink.rsc.org/?DOI=c3nr00752a

UR - http://www.scopus.com/inward/record.url?scp=84878745861&partnerID=8YFLogxK

U2 - 10.1039/c3nr00752a

DO - 10.1039/c3nr00752a

M3 - Article

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VL - 5

SP - 5334

JO - Nanoscale

JF - Nanoscale

IS - 12

ER -

Broad spectral photocurrent enhancement in Au-decorated CdSe nanowires

Abstract

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